"I'm warning the world and Europe in particular — if they do not assume their responsibilities, Libya could facilitate the transit of this flood" of immigrants towards Europe, Salah Mazek told a news conference.

A government statement on Sunday sought to play down his remarks, stressing Tripoli's commitment to combat illegal immigration and "continue collaborating with all countries concerned, Italy in particular, to limit the influx of immigrants".

'Europe's turn to pay'

The statement said Libya respected international and bilateral treaties on illegal immigration.

Mazek had said on Saturday that Libya was "suffering" because thousands of mainly sub-Saharan Africans were spreading disease, crime and drugs in the North African nation.

"Libya has paid the price. Now it's Europe's turn to pay," Mazek added.

For years, Libya has been a springboard for hundreds of thousands of Africans seeking a better life in Europe.

Many cram into makeshift boats to attempt the perilous Mediterranean crossing to Malta or the Italian island of Lampedusa off Sicily.